Shell script to generate Fibonacci series using recursion Post: 302378487

Sponsored Content

Top Forums Shell Programming and Scripting Shell script to generate Fibonacci series using recursion Post 302378487 by Tapas Bose on Tuesday 8th of December 2009 08:53:25 AM

12-08-2009

Registered User

Quote:

Originally Posted by vidyadhar85

I don't think you can call function within the function

Thank you sir for your reply. I have a program to generate factorial of a number solved by recursion where I called the fact() function within fact().

---------- Post updated at 07:23 PM ---------- Previous update was at 01:31 PM ----------

At last it is solved.

Code:

#!/bin/sh

# Shell scrpt to generate Fibonacci series using recursion

export MINIDX=2                     

Fibonacci ()
{
    idx=$1                
    if [ "$idx" -lt "$MINIDX" ]; then
        echo "$idx"              
    else
        (( --idx ))              
        term1=$( Fibonacci $idx )       

        (( --idx ))              
        term2=$( Fibonacci $idx )       

        echo $(( term1 + term2 ))
    fi
}

echo -n "Enter the number of term : "
read MAXTERM

for (( i=0; i<=$MAXTERM; i++ ))
do                      
    FIBO=$(Fibonacci $i)
    echo -n "$FIBO "
done

echo

exit 0

Last edited by Tapas Bose; 12-08-2009 at 09:55 AM.. Reason: spelling mistake

Tapas Bose

View Public Profile for Tapas Bose

Find all posts by Tapas Bose

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Fibonacci series

Need code to run the Fibonacci series from 0 to 10

2. UNIX for Dummies Questions & Answers

generate xml from a shell script

Hello! I would like to generate an xml file from the output of various commands generated from within a shell script (some will be in CDATA). At the moment the only solution I have come up with is echoing xml tags around the commands eg. echo "<bitism>" >> outputfile /usr/sbin/prtconf...

3. Shell Programming and Scripting

How to generate a series of numbers

Hi All, I have a requirement where in I have an input as follows:- input=1-4,6,8-10,12-15 I need to explode this range into an output file as follows:- 1 2 3 4 6 8 9 10 12 13 14 15 My input may vary like 1,5-9,11-13,15-17.......

4. Shell Programming and Scripting

problem in fibonacci series

hi, I'm a beginner to UNIX and got some problem in this fibonacci.Please help me out.Here is the code: fibo() { if then fibo=` expr {fibo ($1 - 2)} + {fibo ($1 - 1)}` | bc echo $fibo fi } echo "enter a number:" read x #echo "The fibonnacci series for value $x is:" fibo $x ...

5. Shell Programming and Scripting

Shell script to find the sum of first n Fibonacci numbers

pls give me the solution for this i need it for my exam pls pls pls Shell script to find the sum of first n Fibonacci numbers

6. Homework & Coursework Questions

Help with shell script to find sum of first n numbers of Fibonacci series

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: Shell script to find sum of first n numbers of Fibonacci series 2. Relevant commands, code, scripts,...

7. Shell Programming and Scripting

generate logfile in a shell script

Unix Gurus, I have a shell script which has few "echo" statements. I am trying to create a logfile where all the outputs of the echo statement sare stored. I will have to add this as the final step in the existing script so that everytime the script runs, a logfile is generated with all the...

8. Shell Programming and Scripting

Fibonacci series -going into infinite loop

Hello, I am a beginner to shell programming. Coded the following for Fibonacci series. #!/bin/bash fib() { i=0 j=1 arr=0 arr=1 echo "enter the limit:" read n while do fo= expr $j - 1 f1=$j f2= expr $j + 1 arr= expr ${arr} + ${arr} echo ${arr}

9. Shell Programming and Scripting

Generate documentation for a shell script

Hi, I've written a shell script with proper intentation and commenting structure. However, I would like to generate documentation for the shell which I have written. Is there any tool as such to generate it like we have javagen/docgen ? Please help. Thanks, Arjun

10. UNIX for Beginners Questions & Answers

Shell script newbie- how to generate service log from shell script

Hi, I am totally a newbie to any programming languages and I just started an entry level job in an IT company. One of my recent tasks is to create a script that is able to show the log file of linux service (i.e. ntpd service) lets say, if I run my script ./test.sh, the output should be...

LEARN ABOUT OPENSOLARIS

script

script(1)							   User Commands							 script(1)

NAME

       script - make record of a terminal session

SYNOPSIS

       script [-a] [filename]

DESCRIPTION

       The  script  utility  makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
       record is saved in the file typescript. See WARNINGS.

       The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
       when the forked shell exits or when Control-d is typed.

OPTIONS

       The following option is supported:

       -a    Appends the session record to filename, rather than overwriting it.

NOTES

       script places everything that appears on the screen in filename, including prompts.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

WARNINGS

       script  can  pose  a  security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
       privileged user, that is, root. Be sure that typescript is not a link before running script.

SunOS 5.11							    30 Jan 2004 							 script(1)